Lawn sprinkler



PATENT OFF] WESLEY HARTMAN, OF JACKSONVILLE, OREGON.

LAWN SPRINKLER.

Application filed February 10, 1927. Serial No.1 67,225.

The present invention relates to improvements in lawn sprinklingapparatus and has for its primary object to provide a sprinkler adaptedto sprinkle a greater or less area through regulation of the pressure ofthe water delivered thereto.

A further object of the invention is the provision of a lawn sprinklingdevice constructed so that a rectangular area of a lawn will be wateredduring the operation thereof.

Still another object of the invention is the provision of .a sprinklerof the above type which is comparatively simple and durable ofconstruction and which can be manufactured at a relatively low cost.

Other objects and advantages of the invention will become apparent asthe description progresses.

in the accompanying drawing forming a part of this specification and inwhich like reference numerals are employed to designate correspondingparts throughout the same Figure 1 is aside elevational view of myimproved sprinkler partially in section to indicate the interiorconstruction, and

Figure 2 is a top plan view of the same.

Referring to the drawing, wherein for the purpose of illustration isshown the preferred embodiment of my invention, the numeral 5 generallydesignates the sprinkler casing embodying a rectangular box-likestructure formed with a relatively large circular openin g in the topthereof. The wall of this opening is formed with a depending flange 6which is U-shaped in cross section and adapted to provide an annulargroove disposed below the top of the casing. Formed integral. with thetop of the casing and projectine upwardly therefrom at-the cornersthereof are tapered fingers 7 the purpose of which will later appear. I

Supported by the flange 6 of the casing and arranged to close theopening in the top thereof is the concavo-convex bottom member 8 of thesprinkler head. which head, as a whole, is of hollow lenticular form,this member being provided with .a peripheral vertically dependingflange 9. The lower edge of the flange 9 is rolled to form a beadadapted to be snugly fitted in the bottom of the annular groove formedby the flange 6. The center of the plate 8 is formed with an openingabout which is provided an annular nipple 10 interiorly screw threadedfor connection with the upper end of a pipe 11. The pipe 11 includes abranch extending horizontally Within the casing and through an openingin the side of the casing and terminating in an exterior screw threadedextension 12 designed for the connection of a hose.

Mounted so as to contact with the peripheral edges of the member 8 is acomplementary concavo-convex member 13 provided with. a verticalperipheral fiange'let contacting with the outer side of the flange 9 andterminating at its lower edge within the bead of the flange 9. Theplates 8 and 13 are rigidly connected to each other, at their marginsand to the flange by a filling 15 of solder or in any other suitablemanner. As clearly illustrated in the drawing, the member 13 is providedwith a plurality of arcuately ar ranged series of perforations 16,Theseperforations are so formed that each series is located opposite arespective edge of the top of the casing so .as tospray water overanarea in the fori'n of a square. Due to the convex formation of themember 13, the perforations are outwardly inclined, the cornerperforations 17 being spaced more remote from the center of the member,so that corner jets of water issue therefrom and fall to the lawnsurface at points to define the corners of the rectangulararea to besprinkled, the jets of water issuing from the outermost row of eachseries of apertures falling to the lawn surface along substantiallystraight lines to define the boundary lines of-said area, and the jetsof water issuing from the inner rows of the several series of aperturesbeing so directed as to sprinkle the remainder of the area.

In operation, a hose is connected to the extension 12 of the pipe 11 andwater under suitable pressure admitted to the sprinkler head. Due to theparticular formation of the apertures in the sprinkler plate 13 thewater will be discharged so as to cover a rectangular preferably squarearea, the size of the sprinkled area varying according to the waterpressure. Thus by controlling the pressure of the water the amount oflawn surface watered by the sprinkler can be regulated. It will be alsonoted, that the standards formed on the marginal top plate of the casing5 will form guard members for the sprinkler head.

An. essential characteristic of the present sprinkler construction isthe extreme efficiency and economy'with which a lawn area.

may be watered, the sprinkler being moved from place to place to coverthe entire lawn surface and by suitable arrangement of the sprinkler thewatering process can be accomplished very economically and uniformly.

It is to be understood that the form of my invention herewith shown anddescribed is to be taken as the preferred example of the same and thatvarious changes as to the size, shape and arrangement of parts may beresorted tO without departing from the spirit of the invention or thescope of the subjoined claims.

Having thus described my invention, I claim:

1. A lawn sprinkler comprising a hollow casing having an opening in itstop and provided with a seat surrounding said opening, a sprinkler headof hollow lenticular form having a peripheral portion secured in saidseat, the said head having a plurality of series of perforations in itsupper wall arranged to direct jets of water, issuing therefrom over asubstantially rectangular area, and a water supply pipe extending intothe casing through one side thereof and opening into the sprinkler headthrough the bottom wall thereof. 7

2. A lawn sprinkler comprising a hollow casing having an opening in itstop and provided with a seat surrounding said opening, a sprinkler headof hollow lenticular form comprising assembled concavo-convex upper andlower sections, the sections being provided at their peripheries withinterlocking depending flanges, the said flanges being secured withinthe said seat in the casing top the said head having a plurality ofseries of perforations in its upper wall arranged to direct jets ofwater issuing therefrom over a substantially rectangular area, and awater supply pipe extending into the casing through one side thereof andopening into the said sprinkler head through the bottom wall thereof.

3. A lawn sprinkler comprising a hollow casing having an opening in itstop and provided with a depending seating flange of U- shaped crosssection surrounding said opening, sprinkler head of hollow lenticularform having a depending peripheral portien seated and secured within thesaid flange, the said head having a plurality of series of perforationsin its upper wall arranged to direct of water, issuing therefrom, over asubstantially rectangular area, and a water supply pipe extending intothe casing through one side thereof and opening into the sprinkler headthrough the bottom wall thereof.

In testimony whereof I aflix my signature.

l/VE SLEY HARTMAN.

